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Updated: Dec 23, 2025

Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning
Published on: August 29, 2025
Assessing Participants' Experiences in a Service-Learning Program: A Psychometric Evaluation
Laura T Colman1, Robyn K Sobelson1, Corinne J Wigington2
1Centers for Disease Control and Prevention, Atlanta, Georgia.
This study developed and validated the Public Health Associate Program (PHAP) Service-Learning Scale (PSLS) to reliably measure participant experiences in health service-learning programs. The PSLS is a crucial tool for evaluating fellowship satisfaction and outcomes.
Area of Science:
- Health Professions Education
- Program Evaluation
- Psychometrics
Background:
- Service-learning is essential for training the health workforce, but validated assessment tools are lacking.
- Evaluating service-learning programs requires psychometrically sound instruments to ensure reliability and validity.
- The Centers for Disease Control and Prevention's Public Health Associate Program (PHAP) needed a tool to assess participant experiences.
Purpose of the Study:
- To psychometrically evaluate the Public Health Associate Program (PHAP) Service-Learning Scale (PSLS).
- To establish the validity, reliability, and internal factor structure of the PSLS for assessing service-learning in health fields.
- To provide a dependable instrument for evaluating participant satisfaction and experiences in fellowship programs.
Main Methods:
- Survey development and psychometric evaluation of the PSLS.
- Exploratory Factor Analysis (EFA) to determine the scale's factor structure.
- Reliability testing using Cronbach's alpha to assess internal consistency.
Main Results:
- The final 22-item PSLS demonstrated high internal consistency (Cronbach's α=.90).
- EFA identified five factors: Learning Outcomes, Mentoring, Experiential Assignment, Self-Efficacy, and Program Satisfaction.
- All subscales exhibited adequate internal consistency (Cronbach's α >.70).
Conclusions:
- The PSLS is a valid and reliable instrument for evaluating service-learning experiences in health-related fellowships.
- This scale addresses a critical gap in the literature for assessing service-learning program effectiveness.
- The PSLS can inform program development and enhance participant satisfaction in future health workforce training initiatives.
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